Henri Lefebvre was a French philosopher and sociologist, born in 1901 and passing away in 1991. He is best known for his work on the social production of space, which explores how social relationships shape our understanding and experience of space. Lefebvre's ideas have influenced various fields, including urban studies, geography, and cultural theory. Lefebvre's most notable work, The Production of Space, argues that space is not just a physical location but is also shaped by social practices and power dynamics. He emphasized the importance of everyday life and how it is intertwined with urban environments, making his theories relevant to contemporary discussions about urbanization and social justice.